By the pandemic of Wuhan virus, we have to wear a mask to prevent the risk of infection.
There are many kind of masks are found in shops, throwaway, washable and so on.
For washable masks, I make a “mask hanger” with 3mm acrylic plate.
It keeps the form of the mask while drying it in outside or even in your bath room.
The mask hangers are machined 8 pieces at a time from 300x223mm acrylic plate using VCarvePro and my homebuilt CNC milling.
Cut out the parts and chamfer are done while the material is fixed on the machine table by double-sided adhesive tape.
However, back side chamfer of the removed parts has to make one by one.
So that a JIG to fix a single part is made as follows;
Find handy-sized plastic block to meet the size of the part.
(1) Drill bolt holes and 5mm pin holes (to locate and clamp the jig on a T-slot).
The pins and T-slot nuts are seen in the photo below.
(2) Glue an aluminum plate (for probing).
(3) Fix the jig on the machine table, cut pocket and aluminium plate simultaneously.
Aluminium plate (red mark) is used to find X0,Y0 using “X-Y Probing Wizard” of 2010Screenset of Mach3.
So that, the jig can be used wherever on the machine table.
Hosepipe from a dust collector is connected to the pocket, it works like a vacuum chuck to hold the part.
Set X0 Y0 by probing;
Then, place a part and set Z0;
Cutting chamfer, works well !!